Cadillac Allante Forum Discussion, 93 vibration under load in Past Cadillac Vehicle Discussion; I have a 93 and it vibrates the whole car pretty violently when under load such as accelerating or going ...

93 vibration under load

I have a 93 and it vibrates the whole car pretty violently when under load such as accelerating or going up a hill
It is worse between about 35 and 55 mph
It is a pretty large amplitude
It is not engine speed dependent nor is it road speed dependent and if I push the pedal down more it gets worse
I have heard everything from bottom motor mount to coils to wires to bad CV joint or boot
Any help will be appreciated as I am trying to make this a daily driver at least in good weather and this ruins it